package com.leetcodehot.problems;

public class problems203 {
    public class ListNode {
        int val;
        ListNode next;

        ListNode() {
        }

        ListNode(int val) {
            this.val = val;
        }

        ListNode(int val, ListNode next) {
            this.val = val;
            this.next = next;
        }
    }


    public ListNode removeElements(ListNode head, int val) {
        ListNode dummy = new ListNode(-1, head);
        ListNode cur = dummy;
        while (cur != null && cur.next != null) {
            if (cur.next.val == val) {
                //删除cur的next
                cur.next = cur.next.next;
            } else {
                cur = cur.next;
            }
        }
        return dummy.next;
    }
}
